Salvage device for drill bit of rotary drilling machine

Abstract

The utility model belongs to the technical field of drill bit salvage, and provides a salvage device for a drill bit of a rotary drilling machine, which comprises a connecting component and drill lifting hook components hinged to two sides of the bottom end of the connecting component, the connecting component is provided with a notch matched with a rotary drilling rod in appearance, and the drill lifting hook components are used for fixing the rotary drilling bit. The device further comprises telescopic mechanisms arranged on the connecting assembly, fixing holes matched with the connecting holes of the rotary excavating rod are formed in the connecting assembly, the telescopic mechanisms correspond to the fixing holes in a one-to-one mode, and telescopic pieces capable of stretching out and drawing back are arranged on the telescopic mechanisms. According to the rotary excavating rod connecting assembly, the telescopic piece stretches out through the telescopic mechanism, the telescopic piece sequentially penetrates through the fixing hole and the connecting hole, the connecting assembly can be fixed to the rotary excavating rod, the connecting assembly can be fixed to the rotary excavating rod without using a specific tool, and workers can conveniently assemble and disassemble the rotary excavating rod.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bit salvaging, in particular to a salvaging device for a drill bit of a rotary drilling machine. Background Art

[0002] A rotary drilling rig is a construction machine suitable for drilling holes in building foundation projects. It is widely used in municipal construction, highway bridges, high-rise buildings and other foundation construction projects. With different drilling tools, it is suitable for dry or wet drilling and rock formation drilling operations. The rotary drilling rig has the characteristics of large installed power, large output torque, large axial pressure, maneuverability, high construction efficiency and multi-function. During the process of rotary drilling of foundation pile holes, the drill bucket and drilling tools often fall into the pile holes due to the influence of construction conditions. At this time, it is necessary to use a salvage device to salvage them.

[0003] CN201920847639.1 discloses a device for salvaging a drill bit of a rotary drilling rig, comprising a main body and a salvaging mechanism at the bottom end of the main body, the salvaging mechanism comprising a drill rod assembly, a rotary drilling rig is fixedly connected in the middle of the main body, a rotary drilling rig is fixedly connected in the middle of one side of the rotary drilling rig, an adjusting spring is fixedly connected in the middle of the bottom end of the rotary drilling rig, the drill rod assembly is located in the middle of the bottom end of the adjusting spring, a rotary drilling bit is movably connected to the bottom end of the drill rod assembly, and reset spring sleeves are fixedly connected on both sides of the bottom end of the drill rod assembly.

[0004] In the above technical solution, the drill rod assembly is fixed to the rotary drilling rod by bolts, and then the rotary drilling bit is hooked by the hinged drill hook and fitted with the fixed flange of the rotary drilling bit to salvage the rotary drilling bit. However, this method of fixing the drill rod assembly to the rotary drilling rod requires workers to use bolts and specific tools for installation during installation, and also requires specific tools for disassembly during disassembly, which is very troublesome. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned problem and provide a salvaging device for the drill bit of a rotary drilling rig. The device extends a telescopic part by utilizing a telescopic mechanism so that the telescopic part passes through a fixing hole and a connecting hole in sequence, so that the connecting assembly can be fixed on the rotary drilling rod. The connecting assembly can be fixed on the rotary drilling rod without using specific tools, which facilitates the installation and disassembly of workers.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A salvaging device for a rotary drilling machine drill bit, comprising a connecting assembly and a drill hook assembly hinged on both sides of the bottom end of the connecting assembly, the connecting assembly being provided with a notch matching the shape of a rotary drilling rod, the drill hook assembly being used to fix the rotary drilling drill bit, and characterized in that it also comprises a telescopic mechanism arranged on the connecting assembly, the connecting assembly being provided with a fixing hole matching the connecting hole of the rotary drilling rod, the telescopic mechanism corresponding to the fixing hole one by one, and a telescopic member being provided on the telescopic mechanism;

[0008] The telescopic mechanism is used to make the telescopic member extend and pass through the fixing hole and the connecting hole in sequence, so that the connecting assembly is fixed on the rotary drilling rod.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model utilizes the telescopic mechanism to extend the telescopic part, so that the telescopic part passes through the fixing hole and the connecting hole in sequence, so that the connecting assembly can be fixed on the rotary drilling rod, and the connecting assembly can be fixed on the rotary drilling rod without using specific tools, which is convenient for workers to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a front view of a salvaging device for a rotary drilling rig drill bit according to Embodiment 1;

[0012] Figure 2 is a stereoscopic view of a connecting piece of a fishing device for a rotary drilling rig drill bit in Example 1;

[0013] Figure 3 is a stereoscopic diagram of a telescopic member of a salvaging device for a rotary drilling rig drill bit according to Example 1;

[0014] Figure 4 is a stereoscopic view of a fixing member of a fishing device for a rotary drilling rig drill bit according to Example 1;

[0015] Figure 5 is a cross-sectional view of a telescopic mechanism of a fishing device for a rotary drilling rig drill bit according to Embodiment 1;

[0016] Among them, the reference numerals of each figure are:

[0017] 1. Connecting assembly; 11. Connecting piece; 111. Notch; 112. Fixing hole; 12. First spring; 13. Conical piece; 2. Drill hook assembly; 3. Telescopic mechanism; 31. Fixed seat; 32. Fixed piece; 321. Slide groove; 33. Telescopic piece; 331. Connecting shaft; 332. Chamber; 333. Handle; 334. Arc end; 34. Elastic assembly. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example 1

[0020] refer to Figures 1 to 5 A salvaging device for a rotary drilling machine drill bit comprises a connecting assembly 1 and a drill hook assembly 2 hinged on both sides of the bottom end of the connecting assembly 1, wherein the connecting assembly 1 is provided with a notch 111 matching the shape of a rotary drilling rod, and the drill hook assembly 2 is used to fix the rotary drilling drill bit, and further comprises a telescopic mechanism 3 arranged on the connecting assembly 1, wherein the connecting assembly 1 is provided with a fixing hole 112 matching the connecting hole of the rotary drilling rod, the telescopic mechanism 3 corresponds to the fixing hole 112 one by one, and the telescopic mechanism 3 is provided with a telescopic member 33 that can be retracted;

[0021] The telescopic mechanism 3 is used to extend the telescopic member 33 and sequentially pass through the fixing hole 112 and the connecting hole, so that the connecting assembly 1 is fixed on the rotary drilling rod.

[0022] Under this design, when the rotary drilling drill bit needs to be salvaged, the rotary drilling rod is inserted into the slot 111 of the connecting assembly 1, and then the telescopic mechanism 3 is used to extend the telescopic part 33, so that the telescopic part 33 passes through the fixing hole 112 of the connecting assembly 1 and the connecting hole of the rotary drilling rod in sequence, so that the connecting assembly 1 is fixed on the rotary drilling rod. After the installation of the connecting assembly 1 is completed, the connecting assembly 1 can be extended into the pit, and the rotary drilling drill bit can be salvaged using the drill hook assembly 2. After the salvage is completed, the worker can use the telescopic mechanism 3 to make the telescopic part 33 retreat away from the connecting hole of the rotary drilling rod, so that the connecting assembly 1 is disconnected from the rotary drilling rod, and the connecting assembly 1 can be disassembled; in this way, the worker can fix the connecting assembly 1 on the rotary drilling rod without using specific tools, which is convenient for the workers to install and disassemble.

[0023] Preferably, the connecting assembly 1 includes a connecting member 11, a first spring 12, and a conical member 13 connected in sequence from top to bottom, the connecting member 11 is provided with a notch 111 matching the shape of the rotary drilling rod, the fixing hole 112 is provided on the side of the connecting member 11, the telescopic mechanism 3 is provided on the side of the connecting member 11, and the drill hook assembly 2 is hinged on both sides of the bottom end of the connecting member 11.

[0024] Specifically, when the rotary drilling bit is to be salvaged, the conical member 13 is used for positioning, and the conical member 13 is inserted into the groove at the top of the rotary drilling bit. In order to avoid hard contact between the conical member 13 and the bottom of the groove, the first spring 12 is used for buffering, which plays a shock-absorbing role and reduces damage to the rotary drilling bit.

[0025] More preferably, the telescopic mechanism 3 also includes a fixed seat 31 arranged on one side of the connecting component 1, a fixing member 32 arranged in the fixed seat 31, and an elastic component 34; an open chamber 332 is provided in the telescopic member 33; the fixing member 32 is movably connected in the chamber 332; one end of the elastic component 34 abuts against the top wall of the chamber 332, and the other end abuts against the top of the fixing member 32; a slide groove 321 is provided on the side of the fixing member 32; a connecting shaft 331 matching the slide groove 321 is also provided on the telescopic member 33, and the connecting shaft 331 slidably cooperates with the slide groove 321.

[0026] Specifically, the fixing seat 31 is set in the fixing seat 31, and the chamber 332 provided in the telescopic member 33 is used to make the fixing member 32 and the chamber 332 of the telescopic member 33 movably connected. When the telescopic member 33 continuously compresses the elastic component 34 until the end face of the telescopic member 33 close to the fixing hole 112 leaves the connecting hole of the rotary drilling rod, the connecting component 1 will be disconnected from the rotary drilling rod, and the disassembly of the connecting component 1 is realized. When the elastic component 34 is reset and the telescopic member 33 is extended to pass through the fixing hole 112 and the connecting hole in turn, the connecting component 1 can be fixed on the rotary drilling rod, and the telescopic member 33 is limited by cooperating with the connecting shaft 331 and the slide groove 321 provided in the fixing member 32.

[0027] In this embodiment, the slide groove 321 is a strip-shaped structure.

[0028] Specifically, the slide groove 321 of the strip structure can limit the telescopic member 33, and in this way the telescopic member 33 can move along the direction of the slide groove 321, ensuring that it can move along the path of the slide groove 321, thereby improving stability.

[0029] Preferably, the elastic component 34 is a second spring; the elastic property of the second spring is utilized to enable the telescopic member 33 to complete the telescopic action.

[0030] More preferably, the telescopic member 33 is further provided with a circular arc end 334 at one end close to the fixing hole 112. The circular end 334 allows the telescopic member 33 to pass through the fixing hole 112 and the connecting hole better.

[0031] Preferably, a handle 333 is further provided at one end of the telescopic member 33 away from the fixing hole 112. By providing the handle 333 at one end of the telescopic member 33 away from the fixing hole 112, the operation of the worker can be facilitated.

[0032] The above are only preferred implementations of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements or modifications can be made without departing from the principle of the present invention. These improvements or modifications should also be regarded as the protection scope of the present invention.

Claims

1. A salvaging device for a rotary drilling rig drill bit, comprising a connecting assembly and a drill hook assembly hinged on both sides of the bottom end of the connecting assembly, wherein the connecting assembly is provided with a notch matching the shape of the rotary drilling rod, and the drill hook assembly is used to fix the rotary drilling drill bit, characterized in that: It also includes a telescopic mechanism arranged on the connecting assembly, the connecting assembly is provided with a fixing hole matching the connecting hole of the rotary drilling rod, the telescopic mechanism corresponds to the fixing hole one by one, and the telescopic mechanism is provided with a telescopic member that can be retracted; The telescopic mechanism is used to make the telescopic member extend and pass through the fixing hole and the connecting hole in sequence, so that the connecting assembly is fixed on the rotary drilling rod.

2. The salvaging device for a rotary drilling rig drill bit according to claim 1, characterized in that: The connecting assembly includes a connecting piece, a first spring, and a conical piece connected in sequence from top to bottom. The connecting piece is provided with a notch matching the shape of the rotary drilling rod. The fixing hole is provided on the side of the connecting piece. The telescopic mechanism is provided on the side of the connecting piece. The drill hook assembly is hinged on both sides of the bottom end of the connecting piece.

3. The fishing device for a rotary drilling rig drill bit according to claim 1, characterized in that: The telescopic mechanism also includes a fixed seat arranged on one side of the connecting component, a fixing member arranged in the fixed seat, and an elastic component. An open chamber is arranged in the telescopic member. The fixing member is movably connected in the chamber. One end of the elastic component abuts against the top wall of the chamber, and the other end abuts against the top of the fixing member. A sliding groove is arranged on the side of the fixing member, and a connecting shaft matching the sliding groove is also arranged on the telescopic member, and the connecting shaft is slidably matched with the sliding groove.

4. The fishing device for a rotary drilling rig drill bit according to claim 3, characterized in that: The slide groove is a strip-shaped structure.

5. The fishing device for a rotary drilling rig drill bit according to claim 3, characterized in that: The elastic component is a second spring.

6. The fishing device for a rotary drilling rig drill bit according to claim 3, characterized in that: An arc end portion is also provided at one end of the telescopic member close to the fixing hole.

7. The fishing device for a rotary drilling rig drill bit according to claim 3, characterized in that: A handle is also provided at one end of the telescopic member away from the fixing hole.

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